Gas-absorption apparatus



ept. 15, 1925. 1,553,718 "G. RATH GAS ABSORPTION APPARATUS Filed Oct. 15, 1924 Patented Sept. 15, 1925.

UNITED STATES GUSTAV RATE, OF BARKER, GERMANY, ASSIGNOR TO FARBENFAJBBIKEN VOBM.

FBIEDB. BAYER AND (70., OF LEVERKUSEN,

NEAR COIDGNE-ON-THE-RHINE, GER- GAS-ABSOBPTION APPARATUS.

Application filed October 15, 1924. Serial No. 748,815.

To all whom it may con/Jam:

Be it known that I, GUSTAV RATH, a citizen of Germany,-residing at Barmen, in the State of Prussia, Germany, have invented new and useful Improvements in Gas-Absorption Ap aratus, of which the following is a specifi cation.

This invention relates to improvements in or modifications of the apparatus described and claimed in the applications of Eugen Strode-r Ser. Nos. 644,232 and 696,040, filed June 8, 1923, and Feb. 29, 1924, respectively.

The specification Ser. No. 644,232 de- 1 scribes apparatus for bringing a gas into intimate contact with a liquid which comprises two parallel shafts, each fitted with a series of disks, the inlet and out-let for the gas being arranged above the disks.

The specification Ser. No. 696,040 de scribes such apparatus in combination with means whereby sprayed liquid is revented from returning to the unsprayed iquid.

It is necessary, when simultaneousl absorbing and concentrating in one an the same apparatus, that the absorbing medium to be saturated should enter at one side of the apparatus, and when sufiiciently concentrated, pass out from the other side.

Should the flow of the gas not take place with regularity, the flow of the liquid through the a paratus must either not be regular, or, if regular, must be pumped through at such speed that the liquid can cope with the greatest flow of the gas which can take place.

In thearrangement shown in the specification Ser. No. 644,232 and Ser. No. 696,040, oent-rifu al or other pumps must be employed, and this invention has for its object to eliminate these adjuncts which not only give rise to troubles in working but whose consumption of power and cost in maintenance sometimes exceed those of the washing apparatus itself. I

According to this invention I provide liquid pockets so situated as to receive liquid sprayed by the rapidly rotating disks and to produce a head of iquid as regards apparatus connected to the absorption apparatus, whereby a circulation of liquid can take place without the employment .of. special.

pumps for this purpose.

' For a full understanding of the invensame horizontal plane.

tionreference is made to the accompanying drawings in which Fig. 1 is a more or less diagrammatic side elevation of an apparatus embodying the invention;

Fig. 2 is a diagrammatic plan view; and

Fig. 3 is a diagrammatic end view.

In the drawings a is' a storage vessel in general and a concentrating vessel in particular, and e a mixing vessel in which a liquid and a gas are brought into intimate contact to promote the absorption of the gas by the liquid. The mixing vessel which is substantially the same as that described in said applications includes two parallel shafts 10 and 11 disposed preferably in the On the shafts 10 and 11 are mounted disks 12 and 13, respectively, in staggered relation relatively to each other. Above the shafts and disks is a gas space having an inlet 14 and an outlet 15. As the gas passes through the gas space from one end to the other, the liquid which is thrown off in sheets of finely subdivided particles intercepts the fiow of gas without materially impeding its flow. The contact between the liquid in this form and the gas greatly promotes the absorption.

The present invention deals with the problem of circulating the absorption liquid through the mixing vessel e and the concentrating vessel (1 without special circulating apparatus.

The solution of the problem has been accomplished as follows:

The fluid connection between the concentrating vessel a and the mixing vessel e comprises a conduit 7 leading from near the top of the former to the bottom portion of the latter, and two branch pipes 0 leading from opposite sides of the mixing vessel by means of a common pipe 9 to near the bottom of vessel a, a pressure equalizing pipe h serving as a pressure-equalizing,

conduit between the top of vessel (1. and the gas space in vessel. 6.

When the system is in normal operating condition the level of the liquid in the mixing vessel 6 and in the pipes g and h is the same, in accordance with the law of communicating tubes.

Above the level of the liquid in the mixing vessel e are disposed pocket-like receptacles 6, preferably on both side walls of the vessel. These receptacles serve the purpose to collect part of the liquid thrown out by the disks 12 and 13, at points substantially above the level of the liquid in the vessel and thereby create a head sufficient when imposed upon the circulating system to cause and maintain a flow of liquid between the mixing vessel and the concentrating vessel. The receptacles b are drained by the pipes 0, previously mentioned. The liquid from the receptacles b flows by gravity into the vessel a through pipes a and g. The rate of circulation is therefore proportional to the rate of collection of liquid in the receptacles b.

I have found that a suflicient circulation is efiected by pockets extending only over a relatively small fraction of the length of the vessel. The rate of circulation may be increased at will to any desired degree within the limits inherent in the character of the apparatus.

For increasing the circulation of liquid through the a paratus, collecting strips (1 are rovided w ich guide the liquld sprayed by are disks into the pockets.

I claim:

1. The combination with a mixing vessel of the character described, including means for producing a spray of liquid particles in the mixing space of said mixingvessel, of means for circulating liquid through the vessel, said means comprising a storage vessel, means above the level of the liquid in the mixing vessel for collecting liquid par-- ticles from the mixing space, a conduit for passing the collected liquid into the storage vessel and a fluid connection from the storage vessel to a int of the mixing vessel below the level of the collecting means.

2. The combination with a mixing vessel including centrifugal means for roducing means for circulating liquid through the vessel, said circulating means comprising means above the level of the liquid in the vessel for collecting at least part of the sprayed liquid, a storage vessel, a conduit for passing the collected liquid into the storage vessel and a fluid connection from the storage vessel to a point of the mixing vessel below the level of the collecting means.

3. A mixin vessel including parallel horizontal sha ts, disks thereon, means for rotating the disks, and a housing above the disks defining a mixing space, means on the housing above the disks for collecting liquid thrown off from the disks and a fluid connection from the collecting means to a point in the mixing vessel below the level of the collecting means, said connection including a storage vessel.

4. A mixing vessel including a liquidcontaining portion, a housing defining a gas space above the latter, means for producing a spray from liquid contained in the vessel, means on the housing for collecting at least part of the sprayed liquid a fluid connection from the collecting means to points outside the vessel, the collecting means comprising a pocket-like receptacle extending lengthwise of the housing, a storage vessel disposed below the level of the liquid in the mixing vessel and connected to said fluid connection and a fluid connection from the upper part of the storage vessel to a point in the mixing vessel below the level of the collecting means.

5. A mixing vessel including a liquidcontaining portion, a housing defining a gas space above the latter, means for producing a spray from liquid contained in the vessel, means on the housing for collectin at least part of the sprayed liquid a flui connection from the collecting means to points outside the vessel, the collecting means comprising a pocket-like receptacle extending lengthwise of the housin and collecting strips disposed to guide co lected liquid into the receptacle, a storage vessel disposed below the level of the liquid in the mixing vessel and connected to said fluid connection and a fluid connection from the upper part of the storage vessel to a point in the mixing vessel below the level of the collecting means.

In testimony whereof I have hereunto set my hand.

' GUSTAV RATH. 

